For a conventional PCB assembly system, thru-hole mounting system is attained via collaboration of manual procedure and computerized method.
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Stage 1: Elements placement - This move is reached manually by experienced engineering staff members. Engineers have to promptly, nevertheless exactly put factors on corresponding positions depending on client's PCB structure documents. Component placement have to conform to rules and operation expectations of thru-hole mounting system to ensure top quality end solutions. For instance, they have got to make clear polarity and orientation of components, to stop working ingredient from affecting ambient factors, to create completed part placement appropriate with corresponding standards also to use anti-static wristbands when dealing with static-sensitive elements like ICs.
Action two: Inspection & Rectification - Once element placement is finished, the board is then placed in a matching transport frame where board with factors plugged in will be automatically inspected so as to determine whether components are accurately placed. If issues concerning component placement are observed, it's easy to get them rectified immediately as well. After all, this takes spot prior to soldering in PCBA method.
Stage 3: Wave Soldering - Now the THT parts should be accurately soldered onto circuit board. In the wave soldering system, the board moves slowly over a wave of liquid solder at large temperature, approximately 500°F. Afterwards, all leads or wires connections can be successfully obtained so that thru-hole factors are firmly attached to the board.